2026-04-14T06:25:13Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/4727812025-04-03T10:11:35Zcom_2072_98col_2072_378192

00925njm 22002777a 4500 dc Byrnes, Kevin. G. author Walsh, Dara author Walsh, Leon G. author Coffey, Domhnall M. author Ullah, Muhammad F. author Mirapeix, Rosa author Hikspoors, Jill author Lamers, Wouters author Wu, Yi author Zhang, Xiao Qin. author Zhang, Shao Xiang author Brama, Pieter author Dunne, Colum P. author O'Brien, Ian S. author Peirce, Colin B. author Shelly, Martin J. author Scanlon, Tim G. author Luther, Mary E. author Brady, Hugh D. author Dockery, Peter author McDermott, Kieran W. author Coffey, J.Calvin author 2021 The position of abdominal organs, and mechanisms by which these are centrally connected, are currently described in peritoneal terms. As part of the peritoneal model of abdominal anatomy, there are multiple mesenteries. Recent findings point to an alternative model in which digestive organs are connected to a single mesentery. Given that direct evidence of this is currently lacking, we investigated the development and shape of the entire mesentery. Here we confirm that, within the abdomen, there is one mesentery in which all abdominal digestive organs develop and remain connected to. We show that all abdominopelvic organs are organised into two, discrete anatomical domains, the mesenteric and non-mesenteric domain. A similar organisation occurs across a range of animal species. The findings clarify the anatomical foundation of the abdomen; at the foundation level, the abdomen comprises a visceral (i.e. mesenteric) and somatic (i.e. musculoskeletal) frame. The organisation at that level is a fundamental order that explains the positional anatomy of all abdominopelvic organs, vasculature and peritoneum. Collectively, the findings provide a novel start point from which to systemically characterise the abdomen and its contents. The development and structure of the mesentery